powerpc/book3s: Queue up and process delayed MCE events.

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When machine check real mode handler can not continue into host kernel
in V mode, it returns from the interrupt and we loose MCE event which
never gets logged. In such a situation queue up the MCE event so that
we can log it later when we get back into host kernel with r1 pointing to
kernel stack e.g. during syscall exit.

Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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Mahesh Salgaonkar 2013-10-30 20:05:49 +05:30 • committed by Benjamin Herrenschmidt

parent 36df96f8ac

commit b5ff4211a8

5 changed files with 168 additions and 98 deletions

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3

arch/powerpc/include/asm/mce.h

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5

arch/powerpc/kernel/entry_64.S

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7

arch/powerpc/kernel/exceptions-64s.S

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154

arch/powerpc/kernel/mce.c

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97

arch/powerpc/platforms/powernv/opal.c

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